YOU SAID:

I railed meemij while he was sleeping

INTO JAPANESE

彼が寝ている間、私はミーミジを叱りました

BACK INTO ENGLISH

I scolded Mimiji while he was sleeping

INTO JAPANESE

ミミジが寝ている間に叱りました

BACK INTO ENGLISH

I scolded Mimiji while she was sleeping

INTO JAPANESE

ミミジが寝ている間に叱りました

BACK INTO ENGLISH

I scolded Mimiji while she was sleeping